Chocs asymétriques et bien-être en union monétaire avec marchés financiers incomplets

This paper shows that financial market incompleteness leads to welfare gains in a monetary union where nominal rigidities and asymmetric shocks do exist. Incomplete financial markets reduce the volatility of the national inflation rates. Welfare gains associated with this decrease are higher than the welfare cost due to the imperfect risk sharing. The net effect is positive and the gains are about 0.05 % in terms of permanent consumption. Classification JEL : E51, E58, F36, F41.